HOW DO WE VIEW THE WORLD?

Sensory perception is interesting but understanding how they work is fun and intriguing as we reveal each of its layers.

The reality which we think of as the real “real” can be objective but the individual factors play with it and seal the deal. So, the perception is neither “veridical” nor “valid”.

It is apparent that there’s limitation in perceiving the reality, for instance, our visible light spectrum which is in the range 380-700 nanometers are restricted and humans are unaware of how ultraviolet and infrared look like. Perception is definitely not “objective” as it is different among individuals and also in different species. It is even more extreme, within a lifespan of an individual perception differs, often elderly have yellowish corneas yielding biased color perception reducing the ability to detect and differentiate bluish color spectra.

This metamorphic ability also differs on the ground of different context. The context interacts with stimulus processing, changes activity in classical perception and language regions, and recruits additional brain regions that contribute crucially to naturalistic perception and language.

Perception is much more complex than what we perceive and imagine. The real world is much different from what is imaged on retina. We visualize this world as three-dimensional, wherein the retina holds a two-dimensional image. Perception is said to be processed through three stage-early processing involves extraction object contours, secondary processing is computation of lightness and late processing involves assigning colors to objects. And the inferior temporal cortex (IT) is the final stage which is responsible for object recognition. IT is also seen to be processing depth perception. Our visual perception works by processing, analyzing and hard-wired probabilities of what objects we see. Why is that different species has different perception and what does it mean in terms of evolution? Why should the perception be limited?